Siemens SINAMICS V20 6SL3210-5BB21-5UV1 1.5 kW 1-Phase VFD

Siemens SINAMICS V20 6SL3210-5BB21-5UV1 1.5 kW 1-Phase VFD

Product Overview

The Siemens SINAMICS V20 6SL3210-5BB21-5UV1 is a compact variable frequency drive for controlling the speed of a compatible three-phase AC motor from a single-phase AC supply. This 1.5 kW, 2 hp-class model is the unfiltered variant in the V20 series. The specified rated output current is 7.80 A, and the drive is intended for practical machine and process speed control. Its FSAC housing uses fan cooling and has an IP20 / UL open-type protection designation. The integrated keypad helps local setup and operation.

Electrical Ratings

This specific version accepts 1 AC 200–240 V input at 47–63 Hz. Siemens’ exact-part technical datasheet quotes a permitted line-voltage tolerance of −15%/+10%; its product catalogue instead states −10%/+10%. Consult the current nameplate and installation manual when evaluating an installation near the voltage limits. Nominal rated output is 3 AC 230 V under IEC designation (240 V NEC). Both Siemens Low Overload (LO) and High Overload (HO) tables give 1.50 kW and 7.80 A for this exact model. The manufacturer’s 2.00 hp reference is subject to the stated voltage conditions; output current and HP ratings are valid in the 220–240 V range. Output frequency is adjustable from 0 to 550 Hz, but permissible motor speed depends on the selected motor and connected equipment. Siemens lists 19.7 A rated input current in the converter variant table.

Control Modes and Performance

The SINAMICS V20 family offers V/f-based motor control and configurable operating functions, including selectable characteristics suited to general speed-control duties. Siemens defines two overload classifications for this drive: LO permits 110% of rated output current for 60 seconds within a 300-second cycle, while HO permits 150% for 60 seconds within a 300-second cycle. These are temporary overload capacities, not continuous current ratings. System sizing should follow motor nameplate data, acceleration demands and installation conditions. Use verified V20 operating instructions when setting ramp, current, or protective parameters.

Communication and Configuration

The manufacturer datasheet lists USS and Modbus RTU as supported communication protocols. These are serial industrial fieldbus protocols, not Ethernet interfaces. The Siemens product catalogue identifies a built-in Basic Operator Panel (BOP), and the drive has configurable inputs and outputs for local controls and basic integration: four standard digital inputs, two digital outputs, two analog inputs (also usable as additional digital inputs), and one analog output. This detail is offered for implementation context; terminal assignment and signalling details should always be checked in the Siemens manual. Do not presume communication accessories or external interface equipment are bundled.

Braking, EMC and Built-in Functions

Article 6SL3210-5BB21-5UV1 is expressly marked unfiltered in the manufacturer datasheet. It does not include an integrated EMC filter. This differs from the filtered part number 6SL3210-5BB21-5BV1, and electromagnetic compatibility requirements must be evaluated for the specific installation. The datasheet states that no braking chopper is integrated. An external braking solution should not be assumed included or compatible without checking Siemens’ accessory and application rules. The drive provides practical speed-control functions, but no certified safety functionality, built-in PLC, or specialized positioning capability is claimed here without exact confirmation.

Installation and Environmental Considerations

The enclosure is FSAC, measuring 91.0 mm wide × 160.9 mm high × 147.0 mm deep per Siemens’ exact-part datasheet. Cooling uses an external fan. Siemens specifies wall or side-by-side mounting, installation altitude of 1,000 m without further altitude-specific assessment, and operating ambient range of −10 to 60 °C, with derating to be observed at temperatures of 40 °C or above. Relative humidity is listed up to 95%. Maximum stated motor-cable lengths are 25 m shielded and 50 m unshielded, subject to the installation rules. An IP20 / UL open-type drive requires an appropriate protected location or suitable enclosure for the installation environment.

Motor Compatibility and Applications

The SINAMICS V20 operating instructions discuss standard asynchronous motors, including suitably selected third-party induction motors. Verify actual motor voltage, current, insulation suitability, wiring and load dynamics before use. Typical technically appropriate uses include adjustable-speed fans, small pumps, light conveyors, and standard machinery drives where the 1.5 kW, 7.80 A and overload capabilities are suitable. Any application needing fast deceleration, special braking, higher enclosure protection, safety-certified stop functions or specialized motor feedback requires separate engineering assessment. Energy consumption improvements depend on the actual load and duty profile and are not guaranteed.

Exact Variant Verification

The defining identifier is 6SL3210-5BB21-5UV1: Siemens SINAMICS V20, single-phase 200–240 V input, 1.5 kW / 7.80 A output rating, unfiltered, FSAC. The nearby 6SL3210-5BB21-5BV1 has a filtered configuration and is not interchangeable for EMC planning without review. The 1.1 kW 6SL3210-5BB21-1UV1 model also has a different current rating. Siemens manufacturer documentation, rather than a nearby part’s specifications, is the basis for the ratings reported here.

Official Manufacturer Links

Official Manufacturer Product Page: https://mall.industry.siemens.com/mall/en/en/Catalog/Product/?mlfb=6SL3210-5BB21-5UV1

Official Manufacturer Datasheet / Technical Documentation: https://mall.industry.siemens.com/mall/Document/GetDocumentBasedOnCode?code=aHR0cHM6Ly9tYWxsLmluZHVzdHJ5LnNpZW1lbnMuY29tL3NwaWNlL2RvY3VzZXJ2aWNlL2RvY3VzZXJ2aWNlP2NvbmZpZ2lkPTE0JmRvY3UubWxmYj02U0wzMjEwLTVCQjIxLTVVVjEmZG9jdS5pbml0dHlwZT1NTEZCJmRvY3UuZ2VuZXJhdGlvbnR5cGU9VklFVyZkb2N1LnZpZXdpZD1QREYmcmVnaW9uPVdXJmxhbmd1YWdlPWVuJmRvY3UubGFuZ3VhZ2UubG9jYWxlMT1lbiZkb2N1Lmxhbmd1YWdlLmxvY2FsZTI9ZW4%3D

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